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在php中 0.5019163067261818这种格式是怎么生成的？

WBOY
Release： 2016-06-20 12:34:03
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最近在做一个模拟提交的代码，有个参数是这样的temp=0.5019163067261818，不知道是什么生成的，请知道的朋友告诉一下，谢谢。


回复讨论(解决方案)

js生产的
Math.random()

js 

<script type="text/javascript">document.write(Math.random());</script>
Copy after login


php 
echo mt_rand() / mt_getrandmax();
Copy after login

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在php中 0.5019163067261818这种格式是怎么生成的？
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